Yoda was modeled on the appearance of Albert Einstein

James Cameron was so inspired by the movie Star Wars that he quit his job as a truck driver and began his career as a film maker

George Lucas originally planned for Yoda to be played by a monkey wearing a mask

Han Solo's famous line "I know" in response to Leia's "I love you" was an ad lib by Harrison Form. The line in the script was "I love you, too."

According to Mark Hamill, 20th Century Fox executives were concerned that Chewbacca was naked and suggested that he wear pants

The shape of the Millennium Falcon was based on a hamburger